サテライトミルによる U 形および H 形異形線の圧延

概要

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The round circular wires are mainly net-shaped into various profiled wires by rolling or drawing, to be further worked for electronic parts, springs, piston rings and rails. These processes require a large number of mill stands, roll passes or dies. Authors have developed a new type of compact continuous mill named the satellite mill. In this satellite mill rolling, longitudinal compressive stress significantly decreases the elongation and promotes transverse metal flow. This elongation-constrained effect of the satellite mill was confirmed in the previous study for rolling of flat and T-shaped profiled wires using open passes. In this study, the satellite mill with closed passes is applied to production of U-shaped and H-shaped profiled wires. The obtained rolling characteristics and hardness are compared with those by a conventional rolling method. It is shown that the satellite-mill rolling is able to form much higher ribs in products than a conventional rolling method and has advantage in the ability to fill the metal into the roll grooves. The elongation-constrained effect is more enhanced in using closed passes than open passes. This type of mill is considered to be suitable for production of profiled wires with complex cross sections.
社団法人日本鉄鋼協会の論文
1998-04-01